Radiator cap



W. B. JARVIS RADIATOR CAP Sept. 4, 1928.

Filed July 12, 1923 INVENTOR. W W/bm 5 J/vms Patented Sept. 4, 1928.

UNITED STATES WILLIAM B. JARVIS, OF GRAND RAPIDS, MICHIGAN.

RADIATOR GAP.

Application filed July 12, 1923. Serial No. 651,123.

The main object of this invention is to provide an improved cap forautomobile radiators and the like having means permitting its beingadjusted to fix or position projecting parts carried by the cap in theproper or desired relation or angle.

Objects relating to structural details will definitely appear from thedetailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the fol lowing specifications. The invention is clearlydefined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisapplication, in which:

Fig. I is a side elevation of a gauge embodying the features of myinvention.

Fig. II is a vertical section on a line corresponding to line 22 of Fig.I looking in the direction of the arrows.

Fig. III is a perspective view of the friction holding member.

Fig. IV is a top perspective view of the radiator neck engaging nut ormember.

In the drawing similar reference characters refer to similar parts inall of the views.

Referring to the drawing, 1 represents the radiator cap provided witharms 2. It will be understood, however, that these arms are an optionalfeature and may be shaped as desired, or omitted.

The dial case 3 is, in the structure illustrated, provided with frontand rear windows 4:, the dial case comprising a frame into which thewindows are set as by the split rings 3. Within the case is a dial plate4 having a vertical slot 5 therein.

The dial case has an integral shank 6 shouldered at 7 to rest on the topof the cap and the cap is arranged through the hole 8 in the shank. Theshank is internally shouldered at 18 to receive the valve disk or plate19 which is clamped against the shoulder by the tubular float housing 15threaded into the shank.

The shank 6 is externally threaded to receive the nut 9 so that the capis clamped be- 5 tween the shoulder 7 and the nut 9. The nut has arecess 10 in its upper side provided with radial slots 11 adapted toprovide a seat for i the spring washer 12 which has arms 13 disposed inthe slots 11 of the recess. The arms 18 extend outwardly and downwardlyprojecting beyond the periphery of the nut to engage the top or edgeofthe neck of a radiator when the cap is threaded thereon, thusfrictionally holding the cap in its adjusted positions and permitting itto be adjusted so that the dial case faces properly on the radiator.

The indicator 14. is guided in the slot 5 in the dial plate and iscarried by the rod 17 arranged through the valve plate 19. The ball.valve 20 on the rod coacts with this plate, which has a curved seat 21,when the float 16 is in its elevated position. The shank 6 hastransverse ventilating ports 22 opening into the longitudinal bore 23which communicates with thedial case and through which the rod 17 isarranged. This prevents the passage of liquid to the dial and also theescape of steam or water when the radiator is in such condition as to belikely to eject steam or water or permit its escape. The float housing15 is open at its lower end and is provided with a screen 25. It alsohas openings 26 at its upper end, in the structure illustrated, providedwith a screen 27, the screen being for convenience wrapped around thehousing.

I have illustrated and described my improvements in an embodiment whichI have found very desirable. I have not attempted to illustrate ordescribe certain embodiments or adaptations which I contemplate as Ibelieve the disclosure made will enable those skilled in the art toembody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. The combination with a radiator cap having an opening therein, of ahead member provided with a shouldered shank disposed through saidopening in said cap and externally threaded, a nut threaded upon saidshank, said nut being also externally threaded to engage the threads inthe neck of a radiator and having a central recess with radial slots inits upper side, and a spring washer with outwardly and downwardlyprojecting arms disposed in said recess and slots and adapted to beclamped between said nut and cap with the arms projecting beyond theperiphery of the nut to engage the top of a radiator neck.

2. The combination of a radiator cap, having an opening therein, a headmember provided with a shank disposed through said opening in the top ofsaid cap, a nut threaded upon said shank to clamp the same to said cap,said nut having aseat in its up er face, and a spring washer disposed insaid seat and provided with outwardly and downwardly projecting armsprojecting beyond the peri hery of the nut to engage the top of a raiator neck upon which the cap is radiator, and a spring member disposedwithin the cap above the nut to project beyond the periphery of the nutto engage the top of a radiator neck upon which the nut is threaded.

4. The combination with a head member, of a cap constituting asupporting base for said head member and adaptedfor rotative engagementwith. the neck of a radiator, and

a spring member secured within said cap to friction'ally engage theneck; of a radiator for holding the cap in its adjusted ositions thereonto pro erly present the hea 5. Thecom ination with a radiator cap havinan opening therein, a head member provi ed with a shank disposed throughsaid opening in said cap, a member disposed on said shank within saidcap to adjustably engage the neck of a radiator, anda spring mem ermounted within said cap to frictionally engage a radiator neck forholding the cap in adjusted positions thereon.

6. The combination of a radiatorcap provided with projecting parts andadaptedfor rotative engagement with the neck of a radiator, and a springmember secured within'said cap to frictionally engage the neck of aradiator for holding the cap in its adjustedposition thereon to properlypresent the projecting parts of thecap.

In witnesswhereof, I have hereuntoset my hand.

WILLIA B, JARVIS.

